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2015 多校 #5 1005 MZL’s chemistry

MZL’s chemistry

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 1306    Accepted Submission(s): 601

Problem Description
MZL define F(X) as the first ionization energy of the chemical element X

Now he get two chemical elements U,V,given as their atomic number,he wants to compare F(U) and F(V)

It is guaranteed that atomic numbers belongs to the given set:{1,2,3,4,..18,35,36,53,54,85,86}

It is guaranteed the two atomic numbers is either in the same period or in the same group

It is guaranteed that xy

 

 

Input
There are several test cases

For each test case,there are two numbers u,v,means the atomic numbers of the two element

 

 

Output
For each test case,if F(u)>F(v),print “FIRST BIGGER”,else print”SECOND BIGGER”
 

 

Sample Input
1 2
5 3
 

 

Sample Output
SECOND BIGGER
FIRST BIGGER
 
水题。
给出两个元素的原子序数,要求比较哪个的第一电离能大….
化学都忘得差不多了==
不过好在限定了元素的范围,基本都是短周期的。
需要注意的是二三主族,五六主族,因为p轨道的全空和半充满会有反常情况(这个叫洪特规则?)

 

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